What’s Vulnerable › Vulnerabilities

CVE-2026-86565: Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-bounds write

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-15
• Weakness: CWE-787

Description

A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

Affected products

• Red Hat Fast Datapath for RHEL 10: all versions
• Red Hat Fast Datapath for RHEL 8: all versions
• Red Hat Fast Datapath for RHEL 9: all versions
• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat Enterprise Linux 10: all versions
• Red Hat Enterprise Linux 8: all versions
• Red Hat Enterprise Linux 9: all versions
• Red Hat OpenStack Platform 13 (Queens): all versions

References

• https://access.redhat.com/security/cve/CVE-2026-86565
• https://bugzilla.redhat.com/show_bug.cgi?id=2529683

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